0 Members and 2 Guests are viewing this topic.
Goto SATA IPC to know more.
1. Can resistive touch screen (3 to 4 inches) work with finger (lower pressure) instead of stylus (higher pressure at a fine point)?It can, not that well though.
2. Does resistive has shorter life? May be the two layers will stick together (instead of bounce back out) and fail?Capacitive touch screens do not wear out basically. Resistive touch screens wear out easily, especially with no screen protector and when poked with unsuitable things which is not that rare.
1. Can resistive touch screen (3 to 4 inches) work with finger (lower pressure) instead of stylus (higher pressure at a fine point)?Just before Apple launched the first iPhone the cost of a capacitive screen was really high. HTC was making a lot of smartphones with resistive touch screens that worked pretty well. They operated with fairly light finger touch, and were fairly robust. They would eventually scratch up, though, and they were never quite as light touch as a capacitive screen. Apple gambled on high volumes driving the price of capacitive screens through the floor, and stirred up their supplier base enough to succeed. Nobody wants a resistive touch screen after experiencing a good capacitive one, but the last of them were not that bad. There are still places where electrical noise makes capacitive screens quirky enough to keep resistive ones in play. There are also infra red beam matrix touch screens, used in noisy environments, and sensitive places like medical applications, where capacitive doesn't cut it. If your mucky fingers stop registering on your , you wipe the screen and your fingers. You don't want that kind of ambiguity with patient systems. I think my Volvo uses an infra red touch screen for noise reasons. Some cars certainly have done. Some e-book readers also use infra red.
2. Does resistive has shorter life? May be the two layers will stick together (instead of bounce back out) and fail?
3. Any other short coming for resistive, other than restricted multipoint? Seem they are still in advertisement for lower cost DIY/Arduino although cell are now exclusively capacitive??
Many thanks
1. Can resistive touch screen (3 to 4 inches) work with finger (lower pressure) instead of stylus (higher pressure at a fine point)?Why would you think they would not work with a finger?!?
2. Does resistive has shorter life? May be the two layers will stick together (instead of bounce back out) and fail?
3. Any other short coming for resistive, other than restricted multipoint? Seem they are still in advertisement for lower cost DIY/Arduino although cell are now exclusively capacitive??
These are reasons why things like ATMs, transit ticket machines, and industrial control displays are overwhelmingly resistive.I don't recall ever seeing ATM with a resistive touch screen. Industrial control yes, and I've seen holes worn out in them. I don't get the claim about mechanical robustness, they are not that robust at all. They still have a glass that can crack on an impact and they have plastic films on the outside that can be damaged and wear way easier than glass. Protective films greatly compromise sensitivity. Resistive touch is advantageous in presence of water or other contamination, electrical interference and when used with gloves. « Last Edit: June 14, , 07:59:23 pm by wraper » The following users thanked this post: Wilson__
What resolution is infra? May be 3 or 4 or 5 rows/column of emitters and receivers, making 9, 16 or 25 'KEYS' on screen and it is a lot of 'keys' as compare with physical key on traditional hard-key devices.Why would you expect infra red to limited like that? They offer similar resolution to capacitive screens.
I have been surprised at how well capacitive touch screens have improved. I remember when the iPhone came out I was disappointed it was capacitive. You have better precision with a resistive touch screen. It is all analog while capacitive touch is limited by the grid pattern and spacing. My thought was with having such a small screen, combine that with not being able to use a stylus and the lower precision would greatly limit it's capabilities. In a sense it has but it seems no one cares.Even the first iPhone was not limited to the grid spacing. They have always used interpolation to achieve a pretty high resolution. The capacitive pads on notebooks were never low resolution. Why should one on a be? The problem with the phones, and the reason the cost was initially so high, was reliably making the very narrow ITO traces needed. The following users thanked this post: tooki, Wilson__
Capacitive touch has gotten really good at working in wet conditions, and higher precision. And resistive definitely wears out easier. There may still be cases for resistive but in general capacitive is usually the better route.
These are reasons why things like ATMs, transit ticket machines, and industrial control displays are overwhelmingly resistive.I think you mean were resistive. The new designs aren't. The following users thanked this post: Wilson__
Many thanks. I speciically referred to 'keys'. That is, on screen 'soft key' instead of hard physical keys. The number of key I stated is generally that a 'machine' need. Bank ATM, weighting scale and may be some industrial control machine. A few keys to select "one of out several" menu jump to next screen level. Up/Down arrow to trim parameters, says temperature controller.There have been numerous types of touch screen offering only a small number of sensed areas. They have often used a coating on the surface of the glass, with contacts resistively bridged by a finger.
A few row is easily done with IR emitted and sensor. Yes, you can have high resolution sensor. Say, use an traditional (the original wide spread use version, 30 years ago, Rockwell modem inside. Not the advanced higher resolution G3 version that did not got wide deployment) fax machine 'contact' (direct touching document, no lens) linear 1-D CCD sensor is about 100 dot per inch if my memory is correct.If you look at the infra-red touch sensors in cars and e-book readers they put something like those FAX machine strips behind the panel, with a light pipe that wraps over the edge of the panel. The part above the panel is very slim, so the border only has to be raised a small amount above the display panel itself. The following users thanked this post: Wilson__
Many thanks. Just curious. Traditional black-and-white LCD are metal traces on glass and quite high resolution by , 640 x 200, IBM PC Convertible. Not sure if it was ITO or other metal??Good question. I don't know. However, before the iPhone was launched HTC had one with a cap touch display in small volume, very unprofitable production. People in Taiwan we were talking to at the time, serving both Apple, HTC and others who were trying to jump on the bandwagon, were struggling with this problem. The following users thanked this post: Wilson__
I have been surprised at how well capacitive touch screens have improved. I remember when the iPhone came out I was disappointed it was capacitive. You have better precision with a resistive touch screen. It is all analog while capacitive touch is limited by the grid pattern and spacing. My thought was with having such a small screen, combine that with not being able to use a stylus and the lower precision would greatly limit it's capabilities. In a sense it has but it seems no one cares.Maybe resistive is more precise in theory, but in practice they’re way worse. One big reason for this is that resistive touch screens must be carefully calibrated (remember doing that on Palm handhelds? ), while capacitive ones don’t need that since the grid is precisely placed at the factory. The following users thanked this post: Wilson__
Capacitive touch has gotten really good at working in wet conditions, and higher precision. And resistive definitely wears out easier. There may still be cases for resistive but in general capacitive is usually the better route.
In touch screens, the battle between capacitive and resistive screens has long intrigued consumers. Each technology possesses unique strengths and weaknesses, leaving users pondering which is truly superior. Understanding the fundamental differences is crucial in making an informed decision. Let’s delve into the comparative analysis of capacitive versus resistive screens to unveil the merits and limitations of each.
A capacitive screen is a type of touch-sensitive display that uses the electrical properties of the human body to detect touch input. These screens are made of layers of glass or plastic that store electrical charge. When a conductive object, such as a finger, touches the screen, it disrupts the electrical fields, allowing the device to register the touch.
The main components of capacitive screens include sensors, a conductive layer, and a protective cover.
Capacitive touchscreens operate based on the principles of electrical capacitance. When a conductive material, such as a finger, touches the screen, it disrupts the screen’s electrostatic field, enabling precise and instantaneous touch recognition.
While capacitive touch screens offer remarkable advantages, they are not without limitations.
A resistive screen is a touch-sensitive display that consists of multiple layers, typically including two electrically conductive layers separated by a small gap. The outer layer is made of a transparent material like polyester, while the inner layer is constructed with glass or another rigid substance. Unlike capacitive screens that support multi-touch gestures, resistive screens primarily recognize one touch point at a time.
Resistive screens detect changes in electrical resistance when pressure is applied, which allows the device to determine the position and intensity of touch input. The two conducting layers in the screen flex and make contact when pressed, creating a measurable change in resistance that is interpreted as a touch command.
For more Resistive/Capacitive Touch Panel PCinformation, please contact us. We will provide professional answers.
Here is the table about the comparison of capacitive and resistive touch screens.
When determining the optimal touchscreen technology, several factors come into play to ensure better usability and functionality.
For personal use, capacitive screens are recommended. Their high sensitivity and multi-touch support make them ideal for tasks like browsing the internet, playing games, and using social media on smartphones and tablets. The clarity and responsiveness of capacitive screens also enhance the overall user experience for personal entertainment and productivity.
In contrast, for industrial use, the limitations of capacitive screens, such as sensitivity to moisture and size limitations, may pose challenges in certain environments. Industrial applications may require screens that can withstand harsh conditions, including exposure to liquids and heavy-duty use. Resistive screens, which are more durable and can be operated with gloves, may be preferred in industrial settings where functionality and reliability are paramount. Additionally, the cost of capacitive screens may be a consideration for industrial applications with budget constraints.
Budget considerations play a significant role in selecting the appropriate touchscreen technology. Resistive touchscreens stand out for their cost-effectiveness, making them an attractive option for budget-conscious consumers. The simpler manufacturing process of resistive screens translates to lower production costs, resulting in more affordable devices equipped with this technology.
On the other hand, capacitive screens may entail higher production expenses due to their intricate design and materials, potentially influencing the overall pricing of devices utilizing this advanced technology.
In conclusion, the choice between capacitive and resistive screens ultimately boils down to individual preferences and specific application requirements. While capacitive screens excel in responsiveness and multi-touch functionality, resistive screens offer durability and compatibility with various input methods. Whether you prioritize precision or resilience, weighing the benefits and limitations of each technology is essential in selecting the ideal touchscreen solution for your needs.
The company is the world’s best 15 inch Stainless Steel Panel PC supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.